Blemishes like acne scars, pigmented (dark) patches, pits in the skin or dark under-eye patches can be concealed with make-up (use concealers that are available in stick, cake and cream options).
Here is how:

- To hide acne pits, apply cream or cake-type concealer into the pits, using a fine brush. The concealer should be one shade lighter than the foundation.

- To hide dark patches, use a concealer that is one or two shades lighter than the foundation. After concealing, apply normal foundation all over the face.

- To conceal dark under-eye circles, it is best to use a foundation and conceal it with a light-toned concealer. Dilute the concealer with a drop of water before applying. Heavy use of concealers can show up lines and wrinkles, so go easy.

- If you can't get hold of a good concealer, use foundation instead. In other words, you will need two shades of foundation. One should be close to your skin tone and the other a shade or two lighter. Use the lighter-coloured one for concealing.

Perfect make-up is the outcome of trial and error. So keep experimenting till you get it right.